<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0253-570X</journal-id>
<journal-title><![CDATA[Revista de Salud Animal]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Salud Anim.]]></abbrev-journal-title>
<issn>0253-570X</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Sanidad Agropecuaria]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0253-570X2022000100012</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características seminales antes y después de la criopreservación de seis razas de equinos en latitudes cercanas al Ecuador]]></article-title>
<article-title xml:lang="en"><![CDATA[Semen characteristics before and after cryopreservation of six horse breeds at latitudes near the Equator]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montiel Quiroga]]></surname>
<given-names><![CDATA[Antonio Jersain]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández Pichardo]]></surname>
<given-names><![CDATA[José Ernesto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miranda Martínez]]></surname>
<given-names><![CDATA[Arianna]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Posadas Rodríguez]]></surname>
<given-names><![CDATA[Jaqueline]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Suástegui]]></surname>
<given-names><![CDATA[José Luis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Clínica privada, Centro de Reproducción y Medicina Equina  ]]></institution>
<addr-line><![CDATA[Tlalpan CDMX]]></addr-line>
<country>México</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma Metropolitana-Xochimilco Laboratorio Manejo de la Reproducción ]]></institution>
<addr-line><![CDATA[Coyoacán CDMX]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2022</year>
</pub-date>
<volume>44</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0253-570X2022000100012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0253-570X2022000100012&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0253-570X2022000100012&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  El objetivo de la presente investigación fue analizar la calidad del semen antes y después de la congelación, de seis razas de equinos durante la época reproductiva y no reproductiva, en latitudes cercanas al Ecuador. Se analizaron 302 eyaculados de seis razas de equinos, en los cuales se determinaron el volumen, motilidad progresiva, concentración espermática, millones de espermatozoides motiles, y dosis aprobadas para la inseminación artificial (IA). Considerando latitudes cercanas al Ecuador, la motilidad progresiva, concentración espermática, millones de espermatozoides motiles en las seis razas, fueron similares entre la época reproductiva y no reproductiva (p&gt;0,05), excepto el volumen donde la raza Holsteiner varió entre las épocas (p&lt;0,05). Las comparaciones dentro de las razas, la Holsteiner sobresalió en algunos parámetros durante la etapa reproductiva (p&lt;0,05). Aumentó el número de dosis aprobadas para IA durante la época reproductiva (p&lt;0,05), independientemente del tipo de crioprotector o envase utilizado para congelar. No se observó un cambio significativo en los parámetros evaluados antes de la congelación en la mayoría de las razas evaluadas, en latitud cercana al Ecuador, sin embargo, sí se determinó un cambio en las dosis aprobadas para la IA durante la época reproductiva.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  This research was aimed at analyzing semen quality before and after freezing, of six horse breeds during the reproductive and non-reproductive season, at latitudes near the Equator. Three hundred and two ejaculates from six horse breeds were analyzed, in which volume, progressive motility, sperm concentration, millions of motile spermatozoa, and approved doses for artificial insemination (AI), were determined. Considering latitudes near the Equator, progressive motility, sperm concentration and millions of motile spermatozoa in the six breeds were similar between breeding and non-breeding seasons (p&gt;0.05); except for volume, where Holsteiner breed varied between seasons (p&lt;0.05). Regarding comparisons among breeds, Holsteiner showed an outstanding behavior in some parameters during the breeding season (p&lt;0.05). The number of doses approved for AI during breeding season increased (p&lt;0.05), regardless of the type of cryoprotectant or the package used for freezing. No significant change was observed in the parameters assessed before freezing in most breeds, at latitudes near the Equator. However, a change in the number of the approved doses for AI during breeding season was observed.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Calidad seminal]]></kwd>
<kwd lng="es"><![CDATA[crioconservación del semen]]></kwd>
<kwd lng="es"><![CDATA[crioprotector]]></kwd>
<kwd lng="es"><![CDATA[razas de equino]]></kwd>
<kwd lng="es"><![CDATA[Ecuador]]></kwd>
<kwd lng="en"><![CDATA[Semen quality]]></kwd>
<kwd lng="en"><![CDATA[semen cryopreservation]]></kwd>
<kwd lng="en"><![CDATA[cryoprotectant]]></kwd>
<kwd lng="en"><![CDATA[horse breeds]]></kwd>
<kwd lng="en"><![CDATA[Equator]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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